package com.yfl.logistics.config;

import com.alibaba.druid.pool.DruidDataSource;
import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
import com.baomidou.mybatisplus.extension.plugins.pagination.optimize.JsqlParserCountOptimize;
import com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;

import javax.sql.DataSource;

//@EnableTransactionManagement
@Configuration
public class MyBatisPlusConfig {

    //配置数据源
    @Bean
    @ConfigurationProperties(prefix = "spring.datasource")
    public DataSource dataSource(){

        return new DruidDataSource();
    }

    //分页插件
    @Bean
    public PaginationInterceptor paginationInterceptor() {
        PaginationInterceptor paginationInterceptor = new PaginationInterceptor();
        // 设置请求的页面大于最大页后操作， true调回到首页，false 继续请求  默认false
        // paginationInterceptor.setOverflow(false);
        // 设置最大单页限制数量，默认 500 条，-1 不受限制
        // paginationInterceptor.setLimit(500);
        // 开启 count 的 join 优化,只针对部分 left join
        paginationInterceptor.setCountSqlParser(new JsqlParserCountOptimize(true));
        //设置方言
        paginationInterceptor.setDialectType("mysql");
        return paginationInterceptor;
    }



    //配置事务管理器
    @Bean
    public DataSourceTransactionManager transactionManager(){
        //配置数据源
        return new DataSourceTransactionManager(dataSource());
    }

    //配置工厂类对象
    @Bean
    public MybatisSqlSessionFactoryBean sqlSessionFactoryBean(){
        MybatisSqlSessionFactoryBean mybatisSqlSessionFactoryBean = new MybatisSqlSessionFactoryBean();
        //设置数据源
        mybatisSqlSessionFactoryBean.setDataSource(dataSource());
        mybatisSqlSessionFactoryBean.setPlugins(paginationInterceptor());
        return mybatisSqlSessionFactoryBean;
    }
}
